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Effect of Cr variation on FCC phase fraction in AlCoCrxFeNi(x= 0 - 1) high-entropy alloys synthesised through mechanical alloying and spark plasma sintering [abstract]

Bhattacharya, Rahul LU ; Guruvidyathri, K. ; Fabijanic, Daniel and Murty, B.S. (2019) World Congress on High Entropy Alloys, November 17-20 2019, Seattle, Washington, USA p.36-36
Abstract
The effect of Cr variation on FCC/BCC phase formation AlCoCrxFeNi (x=
0 - 1) is explored in the present work. Cr is known to be a BCC stabilizer
and s-phase former. These phases were reported in AlCoCrFeNi HEA
obtained through casting route. We adopted mechanical alloying and
spark plasma sintering route, since it suppresses certain complex
phases. It is observed that the Cr assists in FCC phase in composition
domains up to 0.75 molar ratio. This FCC phase is rich in elements Fe, Co
and Cr. Increasing Cr content in the alloy also influences the elemental
distribution among the FCC and BCC/B2 phases, which in turn affects
the thermal stability, hardness, melting point and oxidation behaviour
of these... (More)
The effect of Cr variation on FCC/BCC phase formation AlCoCrxFeNi (x=
0 - 1) is explored in the present work. Cr is known to be a BCC stabilizer
and s-phase former. These phases were reported in AlCoCrFeNi HEA
obtained through casting route. We adopted mechanical alloying and
spark plasma sintering route, since it suppresses certain complex
phases. It is observed that the Cr assists in FCC phase in composition
domains up to 0.75 molar ratio. This FCC phase is rich in elements Fe, Co
and Cr. Increasing Cr content in the alloy also influences the elemental
distribution among the FCC and BCC/B2 phases, which in turn affects
the thermal stability, hardness, melting point and oxidation behaviour
of these HEAs. In this work, we intend to investigate the underlying
thermodynamic explanation for the experimentally observed phase
evolution using CALculation of PHAse Diagram (Calphad) studies as
well. (Less)
Please use this url to cite or link to this publication:
author
; ; and
publishing date
type
Contribution to conference
publication status
unpublished
subject
keywords
High entropy alloys, oxidation behaviour, Mechanical alloying, Spark plasma sintering, High resolution transmission electron microscopy, Scanning electron microscope (SEM), X ray diffraction, EDS, EBSD, Scanning Transmission Electron Microscopy, GDOES, Powder metallurgy (PM), Physical Metallugy, Thermodynamics and kinetics, Sintering, Microstructural evolution, Mechanical properties, Annealing, Heat treatment, Casting, Furnace control, CALPHAD
pages
1 pages
conference name
World Congress on High Entropy Alloys, November 17-20 2019, Seattle, Washington, USA
conference location
Seattle, United States
conference dates
2019-11-17 - 2019-11-20
language
English
LU publication?
no
id
1e794f85-e298-4379-915b-a1bdf9a4cb36
date added to LUP
2025-09-23 17:42:05
date last changed
2025-10-07 10:13:24
@misc{1e794f85-e298-4379-915b-a1bdf9a4cb36,
  abstract     = {{The effect of Cr variation on FCC/BCC phase formation AlCoCrxFeNi (x=<br/>0 - 1) is explored in the present work. Cr is known to be a BCC stabilizer<br/>and s-phase former. These phases were reported in AlCoCrFeNi HEA<br/>obtained through casting route. We adopted mechanical alloying and<br/>spark plasma sintering route, since it suppresses certain complex<br/>phases. It is observed that the Cr assists in FCC phase in composition<br/>domains up to 0.75 molar ratio. This FCC phase is rich in elements Fe, Co<br/>and Cr. Increasing Cr content in the alloy also influences the elemental<br/>distribution among the FCC and BCC/B2 phases, which in turn affects<br/>the thermal stability, hardness, melting point and oxidation behaviour<br/>of these HEAs. In this work, we intend to investigate the underlying<br/>thermodynamic explanation for the experimentally observed phase<br/>evolution using CALculation of PHAse Diagram (Calphad) studies as<br/>well.}},
  author       = {{Bhattacharya, Rahul and Guruvidyathri, K. and Fabijanic, Daniel and Murty, B.S.}},
  keywords     = {{High entropy alloys; oxidation behaviour; Mechanical alloying; Spark plasma sintering; High resolution transmission electron microscopy; Scanning electron microscope (SEM); X ray diffraction; EDS; EBSD; Scanning Transmission Electron Microscopy; GDOES; Powder metallurgy (PM); Physical Metallugy; Thermodynamics and kinetics; Sintering; Microstructural evolution; Mechanical properties; Annealing; Heat treatment; Casting; Furnace control; CALPHAD}},
  language     = {{eng}},
  pages        = {{36--36}},
  title        = {{Effect of Cr variation on FCC phase fraction in AlCoCrxFeNi(x= 0 - 1) high-entropy alloys synthesised through mechanical alloying and spark plasma sintering [abstract]}},
  year         = {{2019}},
}